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#! /usr/bin/python
'''
Copyright 2016 Intel Corporation
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
'''
from cmd import Cmd
import os
import subprocess
import re
import sys
from optparse import OptionParser
from errno import EACCES, EPERM, ENOENT
try:
import readline
except ImportError:
readline = None
persishist = os.path.expanduser('~/.vpphistory')
persishist_size = 1000
if not persishist:
os.mknod(persishist, stat.S_IFREG)
class Vppctl(Cmd):
def __init__(self,api_prefix=None):
Cmd.__init__(self)
self.api_prefix = api_prefix
def historyWrite(self):
if readline:
readline.set_history_length(persishist_size)
readline.write_history_file(persishist)
def print_file_error_message(self,e, file_name):
#PermissionError
if e.errno==EPERM or e.errno==EACCES:
print("PermissionError error({0}): {1} for:\n{2}".format(e.errno, e.strerror, file_name))
#FileNotFoundError
elif e.errno==ENOENT:
print("FileNotFoundError error({0}): {1} as:\n{2}".format(e.errno, e.strerror, file_name))
elif IOError:
print("I/O error({0}): {1} as:\n{2}".format(e.errno, e.strerror, file_name))
elif OSError:
print("OS error({0}): {1} as:\n{2}".format(e.errno, e.strerror, file_name))
def testPermissions(self):
if(self.api_prefix is None):
filename = "/dev/shm/vpe-api"
else:
filename = "/dev/shm/%s-vpe-api" % self.api_prefix
try:
file = open(filename)
file.close()
except (IOError, OSError) as e:
self.print_file_error_message(e,filename)
sys.exit()
def runVat(self, line):
input_prefix = "exec "
input_command = input_prefix + line
line_remove = '^load_one_plugin:'
s = '\n'
if ( self.api_prefix is None):
command = ['vpp_api_test']
else:
command = ['vpp_api_test',"chroot prefix %s " % self.api_prefix]
self.testPermissions()
vpp_process = subprocess.Popen(command,
stderr=subprocess.PIPE,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
stdout_value = vpp_process.communicate(input_command)[0]
buffer_stdout = stdout_value.splitlines()
buffer_stdout[:] = [b for b in buffer_stdout
if line_remove not in b]
for i, num in enumerate(buffer_stdout):
buffer_stdout[i] = num.replace('vat# ','')
stdout_value = s.join(buffer_stdout)
print stdout_value
def do_help(self, line):
self.runVat("help")
def default(self, line):
self.runVat(line)
def do_exit(self, line):
self.historyWrite()
raise SystemExit
def emptyline(self):
pass
def do_EOF(self,line):
self.historyWrite()
sys.stdout.write('\n')
raise SystemExit
def preloop(self):
if readline and os.path.exists(persishist):
readline.read_history_file(persishist)
def postcmd(self, stop, line):
self.historyWrite()
if __name__ == '__main__':
parser = OptionParser()
parser.add_option("-p","--prefix",action="store",type="string",dest="prefix")
(options,command_args) = parser.parse_args(sys.argv)
if not len(command_args) > 1:
prompt = Vppctl(options.prefix)
red_set = '\033[31m'
norm_set = '\033[0m'
if sys.stdout.isatty():
if(options.prefix is None):
prompt.prompt = 'vpp# '
else:
prompt.prompt = '%s# ' % options.prefix
try:
prompt.cmdloop(red_set + " _______ _ " + norm_set + " _ _____ ___ \n" +
red_set + " __/ __/ _ \ (_)__ " + norm_set + " | | / / _ \/ _ \\\n" +
red_set + " _/ _// // / / / _ \\" + norm_set + " | |/ / ___/ ___/\n" +
red_set + " /_/ /____(_)_/\___/ " + norm_set + "|___/_/ /_/ \n")
except KeyboardInterrupt:
sys.stdout.write('\n')
else:
try:
prompt.cmdloop()
except KeyboardInterrupt:
sys.stdout.write('\n')
else:
del command_args[0]
stdout_value = " ".join(command_args)
VatAddress = Vppctl(options.prefix)
VatAddress.runVat(stdout_value)
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